The Geological Society

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Use of Palaeomagnetism and Rock Magnetism to Understand Volcanic Processes, The

Product Code:	SP396
Series:	GSL Special Publications - print copy
Author/Editor:	Edited by M.H. Ort, M. Porreca and J.W. Geissman
Publication Date:	14 April 2015
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Description

Special Publication 396.

This volume provides a synopsis of current research on volcanic processes, as gained through the use of palaeomagnetic and rock magnetic techniques. Thermoremanent magnetization information provides a powerful means of deciphering thermal processes in volcanic deposits, including estimating the emplacement temperature of pyroclastic deposits, which allows us to understand better the rates of cooling during eruption and transport. Anisotropy of magnetic susceptibility and anisotropy of remanence are used primarily to investigate rock fabrics and to quantify flow dynamics in dykes, lava flows, and pyroclastic deposits, as well as identify vent locations. Rock-magnetic characteristics allow correlation of volcanic deposits, but also provide means to date volcanic deposits and to understand better their cooling history. Because lava flows are typically good recorders of past magnetic fields, data from them allow understanding of changes in geomagnetic field directions and intensity, providing clues on the origin of Earth’s magnetic field.

Published online 05/03/2015. Print copies available from 14/04/2015.

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Type:	Book
Ten Digit ISBN:
Thirteen Digit ISBN:	978-1-86239-629-6
Publisher:	GSL
Binding:	Hardback
Pages:	281
Weight:	0.83 kg

Contents

ORT, M. H., PORRECA, M. & GEISSMAN, J. W. The use of palaeomagnetism and rock magnetism to understand volcanic processes: introduction

Thermoremanent Magnetization in Volcanic Rocks and Emplacement Temperature Estimates

ZANELLA, E., SULPIZIO, R., GURIOLI, L. & LANZA, R. Temperatures of the pyroclastic density currents deposits emplaced in the last 22 kyr at Somma–Vesuvius (Italy)

SULPIZIO, R., ZANELLA, E., MACÍAS, J. L. & SAUCEDO, R. Deposit temperature of pyroclastic density currents emplaced during the El Chichón 1982 and Colima 1913 eruptions

NAKAOKA, R. & SUZUKI-KAMATA, K. Rock-magnetic evidence for the low-temperature emplacement of the Habushiura pyroclastic density current, Niijima Island, Japan

RADER, E., GEIST, D., GEISSMAN, J., DUFEK, J. & HARPP, K. Hot clasts and cold blasts: thermal heterogeneity in boiling-over pyroclastic density currents

Anisotropy of Magnetic Susceptibility (AMS) as a Flow Indicator

DELCAMP, A., PETRONIS, M. S. & TROLL, V. R. Discerning magmatic flow patterns in shallow-level basaltic dykes from the NE rift zone of Tenerife, Spain, using the Anisotropy of Magnetic Susceptibility (AMS) technique

ERIKSSON, P. I., RIISHUUS, M. S. & ELMING, S.-å. Magma flow and palaeo-stress deduced from magnetic fabric analysis of the álftafjörður dyke swarm: implications for shallow crustal magma transport in Icelandic volcanic systems

PORRECA, M., CIFELLI, F., SORIANO, C., GIORDANO, G. & MATTEI, M. Magma flow within dykes in submarine hyaloclastite environments: an AMS study of the Miocene Cabo de Gata volcanic units

AGRÒ, A., ZANELLA, E., LE PENNEC, J.-L. & TEMEL, A. Magnetic fabric of ignimbrites: a case study from the Central Anatolian Volcanic Province

WILLCOCK, M. A. W., MATTEI, M., HASALOVÁ, P., GIORDANO, G., CAS, R. A. F. & MORELLI, C. Flow behaviour in the intra-caldera setting: an AMS study of the large (>1290 km³) Permian Ora ignimbrite

ORT, M. H., NEWKIRK, T. T., VILAS, J. F. & VAZQUEZ, J. A. Towards the definition of AMS facies in the deposits of pyroclastic density currents

Rock Magnetism

VIGLIOTTI, L. Magnetic properties of the Campanian Ignimbrite and the marine Y5 tephra layer

GEUNA, S. E., LAGORIO, S. L. & VIZA´ N, H. Oxidation processes and their effects on the magnetic remanence of Early Cretaceous subaerial basalts from Sierra Chica de Córdoba, Argentina

FERK, A., LEONHARDT, R., HESS, K.-U. & DINGWELL, D. B. Volcanic glass and its suitability to recover the ancient geomagnetic field strength

Index

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